Py2FA Google Authenticator in Python

Google Authenticator desktop GUI and script application in Python with JSON secrets.

How to

Install python3 and modules

# Check
which python3

# Install
sudo apt install python3 python3-pyotp python3-tk -y

Add secrets

First add your 2FA secrets to the secrets.json file (when enabling github two factor auth get secret key).

{
  "atomjoy_github": "JBSWY3DPEHPK3PXP",
  "moovspace_github": "JBSWY3DPEHPK3PXD"
}

Run script

The script generates 2fa codes for secrets.

# Gui desktop app tkinter
python3 main.py

# Console script
python3 auth.py

# Console script (30 seconds loop)
python3 2fa.py

Output

Label atomjoy_github Secret JBSWY3DPEHPK3PXP Code 280070
Label moovspace_github Secret JBSWY3DPEHPK3PXD Code 304997

Random secret base32

#!/usr/bin/python3

import pyotp
import time

# Base32 secret
secret = pyotp.random_base32()

# Code from secret
x = pyotp.TOTP(secret)
code = x.now()

# Show
print(secret)
print(code)

# Code verified for current time
print(x.verify(code)) # True

# time.sleep(35)
# print(x.verify(code))

Edit and copy PyF2A activator

For Linux Debian 12 Gnome 43+

# Edit this line change main.py file location
Exec=/bin/python3 /home/username/Dokumenty/github/py2fa-gui/main.py %u

# And copy app activator file to
cp py2fa.desktop /home/username/.local/share/applications

Links

• https://pyauth.github.io/pyotp/
• https://medium.com/@olutomilayodolapo/how-to-retrieve-otp-from-authy-google-authenticator-with-python-53544575bcef
• https://github.com/grahammitchell/google-authenticator/blob/master/google-authenticator.py
• https://www.geeksforgeeks.org/two-factor-authentication-using-google-authenticator-in-python
• https://anzeljg.github.io/rin2/book2/2405/docs/tkinter/index.html
• https://www.pythontutorial.net/tkinter/tkinter-treeview